| From | Aids to navigation--Europe--Maps, Manuscript--Early works to 1800 | to | Lewis and Clark expedition--(1804-1806)--Maps
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| From | Louisiana--Maps | to | Ohio River Valley--Maps, Manuscript--Early works to 1800
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| From | Onate, Juan de,--1549?-1624--Travel--Maps | to | United States--New York (State)--New York
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| From | United States--New York Region | to | Yellowstone River--Discovery and exploration--Maps
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